The general recommendations for patients with heart disease are to cut out the fat and lower the salt, as well as more “regular exercise.” And more often than not the doctor would prescribe statin medication. But would a doctor recommend taking a magnesium supplement or even testing the the patient for a magnesium deficiency?
Probably not, however there seems to be good evidence that low serum magnesium has the strongest correlation with heart disease.
A paper from 1981 and a 2013 review had the same conclusion.
One researcher studied this for decades, exploring the mechanistic underpinnings of magnesium deficiency and heart disease, the role of magnesium in congestive heart failure, the utility of magnesium infusion in acute myocardial infarction,
Unfortunately, she and her results received little acknowledgement by the medical community.
As recently as 2004, the researcher was showing that magnesium accomplishes many of the same effects as statins without the negative side effects.
The paper is available here.